in Iliamna Lake, 1.3 mi. NW of Reindeer Bay and 30 mi. SW of Iliamna, Bristol Bay Low.; 1.5 miles long.
Local name reported in 1956 by R. L. Detterman and B. L. Reed, U.S. Geological Survey (USGS); recorded as "Chekok Island" on a 1923 Alaska Road Commission (ARC) map.